20-2014 KPMI, Black Diamond valve, exhaust. STD

For 1988 to 2003 XL1200 Sportster owners, this Kibblewhite Black Diamond exhaust valve offers a superior alternative to stock replacements. Matching the dimensions of OEM 18024-87, it features a 1.475-inch head diameter, a 0.3095-inch stem diameter, and an overall length of 4.560 inches. Each valve is forged from a single piece of stainless steel in the USA and finished with a black nitride coating. This treatment provides a surface that is both incredibly hard and slick, which is vital for the longevity of the exhaust valvetrain. Whether you are performing a standard top-end refresh or a high-performance build, KPMI’s precision machining ensures a perfect seal and reliable operation under the toughest riding conditions.